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新產(chǎn)品·新技術(shù)信息

Techsil推出一系列固化時間在幾秒鐘的環(huán)氧膠粘劑

來源:林中祥膠粘劑技術(shù)信息網(wǎng)2014年10月27日

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Techsil Unveils a Range of Epoxy Adhesives which Cure within Seconds


Curing with UV-LED-light has helped to elevate light curable adhesive bonding to new levels of advancement. Until recently, UV-LED-hardening adhesives were limited to free-radical curing acrylates. With the recent development of new and innovative photoinitiators, cationic curing epoxy systems can now also be hardened in seconds.

Advantages of Epoxies
  • Proven reliability against environmental effects
  • Withstand effects of wide temperature differences
  • High glass transition temperature
  • Hardened epoxy adhesives feature dry and tack-free surfaces, making them the ultimate protective surface coating
  • Excellent optical characteristics with high refractive indices ? ideal for applications in precision optics and lens bonding
  • Low shrinkage for better positioning and minimal movement
  • Low ionic and alkali contents, with halogenide contents as low as < 10 ppm
  • Wide range of compositions to achieve the desired properties: they can vary from flexible and soft with high breaking strains, to hard and scratch-free with extremely high adhesion

Equipment manufacturers are now offering a new generation of UV-LED-curing equipment with higher output intensities, significantly reducing curing time for adhesives and coatings. Epoxy based resins can now be cured as fast as light curable acrylates. These UV-LED cured epoxies cure as quickly as with broad spectrum UV light cure but with added benefits.

Advantages of LED Technology
  • High energy efficiency
  • Less maintenance and significant reductions in energy costs
  • Long operating life (typical lifetime of LEDs> 20.000 hrs)
  • Less thermal radiation and thus lower thermal stress on heat-sensitive substrates
  • No stand-by times
  • No warm up or cool down phases needed

Techsil supplies a range of UV LED adhesives that can be used in a multitude of applications. These ranges of UV curing adhesives can be used with a wide variety of substrates such as plastics, glass, and metals and are used extensively in many sectors such as: electronics, medical equipment, glass bonding, and optics. The main range is Vitralit from Panacol which are all single component adhesives that cure within the space of a few minutes.

All Panacol LED-cure epoxy adhesives and sealants may also be cured using traditional broad spectrum UV curing equipment. Thus the new generation of epoxies can be incorporated into existing UV bonding processes.

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